Number of nitrogenous bases in a codon is from Biology NEET Year

Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

41.

the scientific name of Asian Tiger Mosquito

  • Aedes aegypti

  • Aedes albopictus

  • Aedes taeniorhynchus

  • Aedes albolineatus


42.

The size of filtration slits of glomerulus

  • 10 nm

  • 15 nm

  • 20 nm

  • 25 nm


43.

Ornithorhynchus is an example of

  • dinosaur

  • monotreme mammal

  • marsupial mammal

  • eutherian mammal


44.

Name of a gaseous plant hormone is

  • IAA

  • gibberellin

  • ethylenes

  • abscisic acid


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45.

The length of DNA having 23 base pair is

  • 78 Ao 

  • 78.4 Ao.

  • 74.8 Ao 

  • 78.2Ao


46.

Which lg is produced in primary immune response

  • IgA

  • IgG

  • IgE

  • IgM


47.

The genetic material of rabies virus is

  • double stranded RNA

  • single stranded RNA

  • double stranded DNA

  • ssDNA


48.

T-lymphocyte is produced in

  • bone marrow

  • spleen

  • pancreas

  • thymus


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49.

Number of nitrogenous bases in a codon is

  • 2

  • 5


A.

The codon is set of 3 pairs of nitrogen bases. Three bases actually code for an amino acid but the DNA requires that the three bases that are doing the coding are linked to their pair. A-T, T-A, G-C. C-G.

So it takes six nitrogen bases to code for one amino acid. So a codon codes for an amino acid and requires a total of six nitrogen bases.


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50.

A character, which is expressed in a hybrid is called

  • dominant

  • co-dominant

  • recessive

  • epistaticn


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